Question

The preoperative assessment revealed that the patient's HR is 115. The surgeon ordered a beta-blocker. Which of the following is a correct rationale for this prescription?

a."A rapid heart rate requires more effort by the heart."
b."The patient may have an undiagnosed heart condition."
c."When the heart rate goes up, the blood pressure does too."
d."Anesthesia has bad effects if the patient is tachycardic."

Answer 1

The rationale for prescribing a beta-blocker in this situation is that a rapid heart rate requires more effort by the heart, and beta-blockers help to reduce the heart rate and workload on the heart.

Step-by-step explanation:

The correct rationale for prescribing a beta-blocker in this situation is a. "A rapid heart rate requires more effort by the heart." Beta-blockers work by blocking the beta-1 receptors, which helps to slow down the heart rate and reduce the workload on the heart. By reducing the heart rate, beta-blockers can be beneficial in certain situations, such as controlling hypertension or treating a rapid heart rate.